<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Log

 * @subpackage Writer

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

/** Zend_Log_Writer_Abstract */

require_once 'Zend/Log/Writer/Abstract.php';

/** Zend_Log_Formatter_Simple */

require_once 'Zend/Log/Formatter/Simple.php';

/**

 * @category   Zend

 * @package    Zend_Log

 * @subpackage Writer

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Log_Writer_Stream extends Zend_Log_Writer_Abstract

{

    /**

     * Holds the PHP stream to log to.

     *

     * @var null|stream

     */

    protected $_stream = null;

    /**

     * Class Constructor

     *

     * @param array|string|resource $streamOrUrl Stream or URL to open as a stream

     * @param string|null $mode Mode, only applicable if a URL is given

     * @return void

     * @throws Zend_Log_Exception

     */

    public function __construct($streamOrUrl, $mode = null)

    {

        // Setting the default

        if (null === $mode) {

            $mode = 'a';

        }

        if (is_resource($streamOrUrl)) {

            if (get_resource_type($streamOrUrl) != 'stream') {

                require_once 'Zend/Log/Exception.php';

                throw new Zend_Log_Exception('Resource is not a stream');

            }

            if ($mode != 'a') {

                require_once 'Zend/Log/Exception.php';

                throw new Zend_Log_Exception('Mode cannot be changed on existing streams');

            }

            $this->_stream = $streamOrUrl;

        } else {

            if (is_array($streamOrUrl) && isset($streamOrUrl['stream'])) {

                $streamOrUrl = $streamOrUrl['stream'];

            }

            if (! $this->_stream = @fopen($streamOrUrl, $mode, false)) {

                require_once 'Zend/Log/Exception.php';

                $msg = "\"$streamOrUrl\" cannot be opened with mode \"$mode\"";

                throw new Zend_Log_Exception($msg);

            }

        }

        $this->_formatter = new Zend_Log_Formatter_Simple();

    }

    /**

     * Create a new instance of Zend_Log_Writer_Stream

     *

     * @param  array|Zend_Config $config

     * @return Zend_Log_Writer_Stream

     */

    static public function factory($config)

    {

        $config = self::_parseConfig($config);

        $config = array_merge(array(

            'stream' => null,

            'mode'   => null,

        ), $config);

        $streamOrUrl = isset($config['url']) ? $config['url'] : $config['stream'];

        return new self(

            $streamOrUrl,

            $config['mode']

        );

    }

    /**

     * Close the stream resource.

     *

     * @return void

     */

    public function shutdown()

    {

        if (is_resource($this->_stream)) {

            fclose($this->_stream);

        }

    }

    /**

     * Write a message to the log.

     *

     * @param  array  $event  event data

     * @return void

     * @throws Zend_Log_Exception

     */

    protected function _write($event)

    {

        $line = $this->_formatter->format($event);

        if (false === @fwrite($this->_stream, $line)) {

            require_once 'Zend/Log/Exception.php';

            throw new Zend_Log_Exception("Unable to write to stream");

        }

    }

}